Davis henry



"0. H; yDOTTERER. Impr'overhent in Axle Boxes."

4Pa'cented May 30,1871.

`phia, countyof Philadelphia., State of Fenn-` j in AxleBoxes andHangers for the same, of

x j ments inaxle-boxes and hangers, too fully j nation, which `have beendesigned with/the l view of reducing' the frictionand wear and I. tearupon. `both journal and` axle-box, and of l j enabling the latter toyield readily and adapt 1 itself tothe various movementsof both theaxle-box and hanger; Fig.2, a plan of the same; Fig. 3, a sectional viewof the box on j the line 1 2, Fig. l; Fig. 4, an exterior view i `of thebox; Fig. 5, a detached perspectiveview of a portion of the box; andFig.' 6, a

` e sectional view of the hanger on the line 3 4:,

i a Fig. 1.

` lar form at the bottom, and has ailat top covg V'opening b for theadmission of the end ofthe axle, the latter being surrounded within thisopening by suitable packing c, which prevents j j the admission of dustinto `or the escape of lubricating material from the box. The rcy ducedportion or. journal G of the axle extends .into an "annular or ibell-shaped bearing, F,

" f j the front of the box, and covered by a cap, E

" l suitably packed to prevent the escape of any 1 `ngivis HENRYnorrnana, on rnrnnnnnrnm, rnnnsritvmvre.f

A naenoveraenr in Axis-sorse.'

`Specification forming part of Letters Patent No; ll5,449, 4dated May30, 1871;' antedated May 18, 18;1.

I', DAVIS HENRY Db'rrnnnn, of Philadell sylvania, have invented certainImprovements which the followingis a speciiioat'ion:

Y Nature and Object of the Intention.

My invention consists of certain improvedescribed hereafter toneedpreliminary explabody of the car and th'e journal.` i Description.ofthe Accompanying Draw/ing. Figure 1 is a sectional view of my improvedr General Description. The axle-boxA is of a curved or semicircu-` eredby a lid, B, suitably secured by bolts or screws a. In vthe'back of thebox is the usual which I have devised asa substitute for the intothe'box from the top, and is hung to and entirely across the box, oneend of the said box, and its opposite end, which is partly iiatadaptcdto a square or rectangular block, H, which is titted into acorrespondingly-shaped stem or hub f of the bearing extends entirelyacross the box, and is in` contact with both sides of the same. Thisprevents any longitudinal movement of the bearing upon the pin G, and,by distributing the pressure along the `whole length of the latter,destroys whatever tendencythere might otherwise be to either bend orbreak the pin. The long hub also reduces the strain upon the bearingitself, and the latter, which it is proposed to make of cast-iron, isstill further strengthened by a band, 71 of wrought-iron or steel shrunkupon it close to its rear open end. In the web c', which connects thehub with the rim of the bearing, there are several openings, j, recessedor hollowed out in the center, as plainly shown in Fig 3, and eachcommunicating, through an inclined passage, h,l in the hub, with thecentral opening in the latter, through whichl passes the pin Gr. vThercare also openings l in the rim of the bearing, and other openings linthe. hub. The box, when in use, is partially filled with oil or otherlubricating material, in which the lower portion of the bearing issubmerged, so that as the said bearing is turned by the motion of thejournal, lubricating material will be constantly carried up and fed tothe latter. The hollowed-out or recessed openings j in the web of thebearing also act as receptacles or reservoirs in which lubricatingmaterial is carried upward and fed to the pin G through the passageslk,the pin being also lubricated through the holes l. In order to insure apositive motionof the bearing,and prevent any' slipping of `the same,upon the journal and consequent unequal wear, I gear the journal andbearing together by forming cog-teeth upon the journal at the point m,adaptedv to corresponding internal teeth m of` the bearing.

The advantages possessed by the above box over ordinary boxes with fixedbearings will be evident Without further description, while over boxesprovided with' the ordinary annular bearings it has the followingadvantages: 1first, a considerable reduction of friction, as the journalextends into and is in direct-contact with a bearing hung directlyr tothe box, instead of 1vitli an annular band Wbichpasses around a rolleras well as around the journal; second, greater compactness; and third, apositive movement of the bearing.

In order that the box may adapt itself to the varying positions of thejournal of the axle and at the same time accommodate itself` to themovements of the hanger P, by which itis attached to the body ol thecar, I have devised the arrangement shown in Figs. l, 2, and 6. Thehanger is arranged to be secured directly to the body of the car ortruck, and has tubular or cylindrical extensions P which jnojectdownward on both sides of the box. Trunnions r 1 project from the sidesof the box through vertical slots s formed on these extensions ofthehanger, and are adapted to sliding boxes or pistons T T Within the saidextensions, and the springs, instead of being arranged above the box, asusual, are contained Within the extensions of the hanger, between tbetop of the same and the pistons T. These springs, indicated by theletter e in the drawing, consist, in the present instance, of

blocks of gum elastic', but strong spiral or other springs may beemployed.

Claims.,

1. In an axle-box, the combination of the journal of the axle with anannular or bellshaped bearing, F, hung to and arranged to turn Withinthe box, substantially as described.

2. The said journal and bearing, when geared together to insure apositive movement of the bearing, as set forth. v

3. The combination, with the bearing, of a strengthening band or collar,h, of Wroughtiron or steel.

4. The combination of. the openings j, arranged at the front ofthebearing, and recessed at the edges, and passages 7c for conductinglubricating material from said recessed edges to the pin G, to which thebea-ring is hung.

5. The pin Gr, adapted to a recess on one side of the box, and to ablock, H, fitted to and arranged to have a limited movement in anopening, d', in the opposite side of the box, all substantially asdescribed.

6. The trunnions I, resting in bearings supported by springs o, asspecified.

In testimony whereof I have signed my name to this specification in thepresence ot' two subscribing Witnesses.

Witnesses: D. H. DOTTERER.

WM. A. STEEL, FRANK. B. RrcHAnDs.

